A California woman says she robbed teen pop star Justin Bieber of his virginity and produced a love child from the groupie hook-up.

Mariah Yeater, 20, slapped the pint-sized hitmaker with a paternity suit in San Diego, demanding that he take a DNA test.

Yeater said she had sex with Bieber, now 17, after meeting him backstage at a Los Angeles concert last year, RadarOnline reported. Yeater was 19 when she allegedly hooked up with Bieber, who would have been 16 then.

Bieber — known for his hit “Baby’’ — played at Staples Center in LA on Oct. 25, 2010, which would fit the timeline of the 3-month-old baby boy’s birth

“Justin Bieber suggested that I go with him to a private place where we could be alone,” Yeater says in the suit. “I agreed to go with him, and on the walk to a private area, he told me he wanted to make love to me and this was going to be his first time.”

For a beginner, Bieber was remarkably aggressive, she said.

“After walking away from the other people backstage, Justin Bieber found a place where we could be alone — a bathroom,” she said, adding he refused to use a condom.